Temperature sensor with pressing rivet connection

Abstract

The utility model provides a temperature sensor with pressing rivet connection, comprising a connector assembly comprising a plug and a connector assembly housing; wherein the connector shell comprises a connector guide column, a pressing rivet step and a connector base; the shell is provided with step holes, the step holes comprise a bottom step hole and a top step hole, the diameter of the bottom step hole is matched with the diameter of the connector guide column, and the diameter of the top step hole is matched with the diameter of the connector base; the connector is pressed into the stepped hole of the shell through a press riveting process; the inner sealing ring is arranged in the shell; and the outer sealing ring is arranged outside the shell. According to the temperature sensor provided by the utility model, the connector is connected with the housing through the pressing rivet technology, thereby reducing the material consumption of plastic particles, modularly designing the connector part and the installation interface part, reducing the development of new molds through different combination modes, and greatly reducing the development cost and the development period.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a temperature sensor with a pressure riveted connection. Background Art

[0002] A temperature sensor is a sensor that senses temperature and converts it into an output signal. It generally consists of a sensing element and a connector. Due to the demands of their operating environment, temperature sensors must withstand conditions such as humidity, heat, vibration, and corrosion. The connector and housing of a temperature sensor must not only meet the required connection strength but also possess a certain degree of waterproofness and airtightness. Figure 1 A cross-sectional view of the internal structure of an existing temperature sensor is shown. Figure 1 As shown, the temperature sensor includes a connector 101 and a housing 103. Usually, the connector 101 and the housing 103 are integrally injection molded. A sealing gasket 102 on the outside of the housing is used to fasten the connector 101 and the housing 103. The sensing element 104 is used to detect the temperature. The sensing element 104 is wrapped by a sealing material and placed in the housing.

[0003] In existing temperature sensors, the connector and the housing are integrally injection molded, which uses a large amount of plastic particles, has high mold development costs and a long development cycle. Utility Model Content

[0004] In order to solve some or all of the problems in the prior art, the present invention provides a temperature sensor with a press-riveted connection, comprising:

[0005] A temperature sensor with a press-riveted connection, characterized by comprising:

[0006] A connector, comprising a connector plug and a connector housing; wherein the connector housing comprises a connector guide post, a rivet step, and a connector base, wherein the diameter of the connector base is greater than the diameter of the connector guide post;

[0007] A housing, wherein the housing is provided with a stepped hole, the stepped hole including a bottom stepped hole and a top stepped hole, the diameter of the bottom stepped hole matching the diameter of the connector guide post, the diameter of the top stepped hole matching the diameter of the connector base, and the top stepped hole having a functional slot; the press-riveted step is arranged circumferentially along the surface of the connector guide post, and its diameter is larger than the diameter of the bottom stepped hole; the connector is pressed into the stepped hole of the housing by a press-riveting process, the connector guide post is located in the bottom stepped hole of the housing, and the press-riveted step and the end face of the connector base are located in the top stepped hole;

[0008] an inner sealing ring disposed within the housing; and

[0009] An outer sealing ring is arranged outside the housing.

[0010] Furthermore, the functional groove passes through a portion of the cavity wall of the top step hole.

[0011] Furthermore, the diameter of the riveting step is 0.6-2 mm larger than the diameter of the bottom step hole.

[0012] Furthermore, the temperature sensor with the riveted connection further comprises:

[0013] an electrical plug, one end of which is fixed to the connector and the other end of which extends into the housing;

[0014] a thermal element, the thermal element comprising a sensing element and a lead, the sensing element being arranged at the bottom end of the housing, one end of the lead being connected to the sensing element, and the other end of the lead being connected to a corresponding electrical plug extending into the housing;

[0015] Thermally conductive silicone grease fills the bottom end of the housing and covers the sensing element.

[0016] Furthermore, the connector is a stainless steel connector, an aluminum alloy connector, a magnesium alloy connector, a titanium alloy connector, a rubber connector, a polypropylene connector, a polyethylene connector, or a polyvinyl chloride connector.

[0017] Furthermore, the shell is a stainless steel shell, an aluminum alloy shell, a magnesium alloy shell, or a titanium alloy shell.

[0018] Furthermore, the inner sealing ring is arranged at a corner inside the housing; and / or

[0019] The outer sealing ring is arranged at a corner outside the housing.

[0020] Furthermore, the inner sealing ring is a rubber sealing ring, a polypropylene sealing ring, a polyethylene sealing ring, or a polyvinyl chloride sealing ring; and / or

[0021] The outer sealing ring is a rubber sealing ring, a polypropylene sealing ring, a polyethylene sealing ring, or a polyvinyl chloride sealing ring.

[0022] Furthermore, the sensing element is a thermistor or a thermocouple.

[0023] Furthermore, the sensing element is 1 mm to 5 mm away from the inner wall of the bottom end of the housing.

[0024] The technical solution of the utility model has the following beneficial effects:

[0025] 1. The temperature sensor with press-riveted connection provided by the utility model changes the integral injection molding connection between the connector and the housing to a press-riveted connection between the connector and the housing, thereby reducing the use of plastic particles. The modular design of the connector part and the installation interface part reduces the development of new molds through different combination methods, significantly reducing development costs and development cycles.

[0026] 2. The temperature sensor with press-riveted connection provided by the present invention has sealing rings arranged inside and outside the housing, which can more firmly install the connector in the housing, effectively preventing water vapor from the external environment from penetrating into the temperature sensor, and improving the waterproof performance of the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To further illustrate the above and other advantages and features of various embodiments of the present invention, a more detailed description of various embodiments of the present invention will be presented with reference to the accompanying drawings. It will be understood that these drawings depict only typical embodiments of the present invention and are not to be considered as limiting the scope thereof. In the drawings, for clarity, identical or corresponding components will be indicated by the same or similar reference numerals. Furthermore, it will be understood that the various embodiments shown in the drawings are illustrative representations and are not necessarily drawn to scale.

[0028] Figure 1 A cross-sectional view showing the internal structure of a conventional temperature sensor;

[0029] Figure 2 Shows a schematic diagram of the connector structure of an embodiment of the utility model;

[0030] Figure 3 A schematic diagram of the housing structure of an embodiment of the present utility model is shown;

[0031] Figure 4 A schematic diagram showing the overall structure of a temperature sensor with a press-riveted connection according to an embodiment of the present invention is shown; and

[0032] Figure 5 A cross-sectional view showing the internal structure of a temperature sensor with a press-riveted connection according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0033] In the following description, the present invention is described with reference to various embodiments. However, those skilled in the art will recognize that the embodiments may be practiced without one or more of the specific details, or with alternative and / or additional methods or components. In other cases, well-known structures or operations are not shown or described in detail to avoid obscuring the practical aspects of the present invention. Similarly, specific numbers and configurations are set forth for illustrative purposes in order to provide a comprehensive understanding of the embodiments of the present invention. However, the present invention is not limited to these specific details.

[0034] In the present utility model, it should be noted that the terms "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0035] It should also be noted that, in this utility model, unless otherwise expressly specified or limited, the terms "disposed," "configured," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0036] In this utility model, unless otherwise specified, the phrases "arranged on" or "arranged above" do not exclude the presence of an intermediate object between the two. Furthermore, "arranged on or above" merely indicates the relative positional relationship between two components. In certain circumstances, such as after reversing the product orientation, the phrase "arranged below or below" can also be translated as "arranged below" and vice versa.

[0037] In the present invention, reference to "one embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention. The phrase "in one embodiment" appearing in various places in this specification does not necessarily refer to the same embodiment.

[0038] It should be noted that it should also be understood that in the embodiments of the present invention, the terms "comprise", "include", "have", "include" and / or "comprising", when used in this specification, indicate the existence of the stated features, elements and / or parts, but do not exclude the existence or addition of one or more other features, elements, parts and / or their combinations.

[0039] In the present invention, the quantifiers "plurality" and "multiple" refer to one or more elements.

[0040] The solution of the utility model is further described below in conjunction with the accompanying drawings of the embodiments.

[0041] Figure 2 FIG1 shows a schematic diagram of the connector structure of an embodiment of the present invention. Figure 2As shown, the connector 201 includes a connector plug 202 and a connector housing; wherein the connector housing includes a connector guide post 2011, a riveting step 2012 and a connector base 2013, and the diameter of the connector base 2013 is larger than the diameter of the connector guide post 2011.

[0042] Figure 3 FIG. 1 shows a schematic diagram of the housing structure of an embodiment of the present invention. Figure 3 As shown, the housing 208 is provided with a stepped hole 2081, which includes a bottom stepped hole 2083 and a top stepped hole 2084. The diameter of the bottom stepped hole 2083 matches the diameter of the connector guide column 2011, and the diameter of the top stepped hole 2084 matches the diameter of the connector base 2013. Figure 3 As shown, a functional groove 2082 is formed in the top stepped hole 2084, and the functional groove 2082 partially penetrates the cavity wall of the top stepped hole 2084. In one embodiment of the present invention, the functional groove 2082 can also penetrate the cavity wall of the top stepped hole 2084. The press-riveting steps 2012 are arranged around the circumference of the surface of the connector guide post 2011, and the diameter of the press-riveting steps 2012 is 0.6-2 mm larger than the diameter of the bottom stepped hole 2084.

[0043] During actual use, the connector guide post 2011 of the connector 201 is placed in the bottom step 2083, so that the rivet step 2012 contacts the top surface of the top step 2084. At this time, axial pressure is applied to the connector 201, so that the rivet step 2012 is pressed into the step hole 2081 of the housing. When the connector 201 is riveted to the required depth, the connector guide post 2011 is located in the bottom step hole 2083 of the housing 208, and the end surface of the rivet step 2012 and the connector base 2013 are located in the top step hole 2084. The riveting process of the connector 201 and the housing 208 is completed by stopping the pressure. The overall structure after riveting is shown as follows. Figure 4 This press-riveted structure requires lower machining precision for the connector 201 and housing 208, and the press-riveting process is relatively simple and easy to operate. By replacing the integral injection molding of the connector and housing with a press-riveted connection, the use of plastic particles is reduced. The modular design of the connector and mounting interface reduces the need for new mold development through different combinations, significantly reducing development costs and cycles.

[0044] Figure 5 A cross-sectional view shows the internal structure of a temperature sensor according to one embodiment of the present invention. As shown, the temperature sensor comprises a connector 201, an electrical plug 203, an inner sealing ring 205, an outer sealing ring 206, a thermistor, thermal grease 210, and a housing 208. The connector 201 comprises a plug 202 and a connector housing 203.

[0045] In one embodiment of the present invention, the connector 201 can be integrally formed, and the connector 201 can be a stainless steel connector, an aluminum alloy connector, a magnesium alloy connector, a titanium alloy connector, a rubber connector, a polypropylene connector, a polyethylene connector, or a polyvinyl chloride connector.

[0046] There are two electrical plugs 203, one end of which is fixed to the plug 202, and the other end of which extends into the housing 208. In one embodiment of the present invention, there can be multiple electrical plugs 203, that is, more than two.

[0047] Inner sealing ring 205 is disposed within housing 208, while outer sealing ring 206 is disposed outside of housing 208. Inner sealing ring 205 and outer sealing ring 206 ensure that connector 201 is mounted within housing 208, forming a more stable temperature sensor. This is because the diameters of inner sealing ring 205 and outer sealing ring 206 are smaller than the width of connector 201, preventing connector 201 from passing through the two sealing rings. This restricts the position of connector 201 and prevents it from falling out of housing 208. In one embodiment of the present invention, inner sealing ring 205 is disposed at a corner within housing 208, and / or outer sealing ring 206 is disposed at a corner outside of housing 208. In one embodiment of the present invention, inner sealing ring 205 is a rubber sealing ring, a polypropylene sealing ring, a polyethylene sealing ring, or a polyvinyl chloride sealing ring, and / or outer sealing ring 206 is a rubber sealing ring, a polypropylene sealing ring, a polyethylene sealing ring, or a polyvinyl chloride sealing ring.

[0048] The thermal element includes a sensing element 209 and leads 207. The sensing element 209 is disposed at the bottom of the housing 208. Two leads 207 are provided, one end of each lead 207 being connected to the sensing element 209, and the other end of each lead 207 being connected to a corresponding electrical plug 203 extending into the housing 208. To prevent the two leads 207 from contacting each other and causing a short circuit, a plastic protective sheath may be provided over the leads. In one embodiment of the present invention, there may be multiple leads 207, i.e., more than two. In one embodiment of the present invention, the sensing element 209 is a thermistor or a thermocouple.

[0049] Thermal grease 210 fills the bottom of the interior of housing 208 and covers sensor element 209, essentially submerging sensor element 209 in the thermal grease 210. In one embodiment of the present invention, sensor element 209 is 1 mm to 5 mm from the bottom inner wall of housing 208. In one embodiment of the present invention, the top of thermal grease 210 protrudes 1 mm to 10 mm above the top of sensor element 209. In one embodiment of the present invention, housing 208 is made of stainless steel, aluminum alloy, magnesium alloy, or titanium alloy.

[0050] Thermal grease 210 can reduce the possibility of short circuit of lead 207, so that the required external detection temperature can be transmitted to sensor element 209 more quickly through housing 208 and thermal grease 210, making the temperature data information on the surface of housing 208 more accurate.

[0051] The temperature sensor provided by the utility model connects the connector to the housing through a riveting process, reducing the use of plastic particles. The modular design of the connector part and the installation interface part reduces the development of new molds through different combination methods, greatly reducing development costs and development cycles. The sealing rings are arranged inside and outside the housing, so that the connector can be more firmly installed in the housing, effectively preventing water vapor from the external environment from penetrating into the temperature sensor, and improving the waterproof performance of the temperature sensor.

[0052] Although various embodiments of the present invention have been described above, it should be understood that they are presented by way of example only and not limitation. It will be apparent to those skilled in the relevant art that various combinations, modifications, and variations may be made thereto without departing from the spirit and scope of the present invention. Therefore, the breadth and scope of the present invention as disclosed herein should not be limited by the exemplary embodiments disclosed above, but should be defined solely in accordance with the appended claims and their equivalents.

Claims

1. A temperature sensor with a press-riveted connection, characterized in that: include: A connector, comprising a connector plug and a connector housing; The connector housing includes a connector guide post, a riveting step, and a connector base, and the diameter of the connector base is larger than the diameter of the connector guide post; A housing, wherein the housing is provided with a stepped hole, the stepped hole including a bottom stepped hole and a top stepped hole, the diameter of the bottom stepped hole matching the diameter of the connector guide post, the diameter of the top stepped hole matching the diameter of the connector base, and the top stepped hole having a functional slot; the press-riveted step is arranged circumferentially along the surface of the connector guide post, and its diameter is larger than the diameter of the bottom stepped hole; the connector is pressed into the stepped hole of the housing by a press-riveting process, the connector guide post is located in the bottom stepped hole of the housing, and the press-riveted step and the end face of the connector base are located in the top stepped hole; an inner sealing ring disposed within the housing; and An outer sealing ring is arranged outside the housing.

2. The temperature sensor with a press-riveted connection according to claim 1, characterized in that: The functional groove passes through a portion of the cavity wall of the top step hole.

3. The temperature sensor with a press-riveted connection according to claim 1, characterized in that: The diameter of the rivet step is 0.6-2 mm larger than the diameter of the bottom step hole.

4. The temperature sensor with a press-riveted connection according to claim 1, characterized in that: Also includes: an electrical plug, one end of which is fixed to the connector and the other end of which extends into the housing; a thermal element, the thermal element comprising a sensing element and a lead, the sensing element being arranged at the bottom end of the housing, one end of the lead being connected to the sensing element, and the other end of the lead being connected to a corresponding electrical plug extending into the housing; Thermally conductive silicone grease fills the bottom end of the housing and covers the sensing element.

5. The temperature sensor with a press-riveted connection according to claim 1, characterized in that: The connector is a stainless steel connector, an aluminum alloy connector, a magnesium alloy connector, a titanium alloy connector, a rubber connector, a polypropylene connector, a polyethylene connector, or a polyvinyl chloride connector.

6. The temperature sensor with a press-riveted connection according to claim 1, characterized in that: The shell is a stainless steel shell, an aluminum alloy shell, a magnesium alloy shell, or a titanium alloy shell.

7. The temperature sensor with a press-riveted connection according to claim 1, characterized in that: The inner sealing ring is arranged at a corner inside the housing; and / or The outer sealing ring is arranged at a corner outside the housing.

8. The temperature sensor with a press-riveted connection according to claim 1, characterized in that: The inner sealing ring is a rubber sealing ring, a polypropylene sealing ring, a polyethylene sealing ring, or a polyvinyl chloride sealing ring; and / or The outer sealing ring is a rubber sealing ring, a polypropylene sealing ring, a polyethylene sealing ring, or a polyvinyl chloride sealing ring.

9. The temperature sensor with a press-riveted connection according to claim 4, characterized in that: The sensing element is a thermistor or a thermocouple.

10. The temperature sensor with a press-riveted connection according to claim 4, characterized in that: The sensing element is 1mm-5mm away from the inner wall of the bottom end of the shell.

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